07-05-2019, 02:29 PM
Hi, I welcome you to test the behaviour and you'll see that just having an entire rope hierarchy inside a prefab breaks the attachment points (that are also parts of the prefab).
Additionally, please not that in fact, it is very much possible to have references from inside an instantiated prefab to the "outside world", because the scene the prefab is in will hold that reference (or, for nested prefabs, a parent prefab depending on where the referenced object lives).
If you can't test that yourself or find something different, please let me know where/how to submit a (confidential) bug report.
Additionally, please not that in fact, it is very much possible to have references from inside an instantiated prefab to the "outside world", because the scene the prefab is in will hold that reference (or, for nested prefabs, a parent prefab depending on where the referenced object lives).
If you can't test that yourself or find something different, please let me know where/how to submit a (confidential) bug report.